CN203063652U - Stepless speed change hybrid power assembly with planetary gear - Google Patents
Stepless speed change hybrid power assembly with planetary gear Download PDFInfo
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- CN203063652U CN203063652U CN 201320047827 CN201320047827U CN203063652U CN 203063652 U CN203063652 U CN 203063652U CN 201320047827 CN201320047827 CN 201320047827 CN 201320047827 U CN201320047827 U CN 201320047827U CN 203063652 U CN203063652 U CN 203063652U
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- driving engine
- engine
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Abstract
The utility model discloses a stepless speed change hybrid power assembly with a planetary gear, which comprises an output shaft, an engine, the planetary gear, a sun gear, a planet wheel, a gear ring, a planet carrier and an electric motor, wherein the output shaft and the planet carrier are connected fixedly; the engine and the sun gear are connected fixedly; the electric motor and the gear ring are connected fixedly; power is input by the engine and the electric motor respectively through the sun gear and the gear ring, is output by the output shaft, and drives wheels finally; and the stepless speed change can be achieved by adjusting the rotating speed of the electric motor. The stepless speed change hybrid power assembly with the planetary gear has the advantages as follows: the stepless speed change of the engine can be achieved through the electric motor and the planetary gear; and the constant torque can be output at different output rotating speeds on the premise of the constant torque of the engine.
Description
Technical field
The utility model belongs to hybrid vehicle chassis and driving system field, is specifically related to a kind of planetary gear stepless speed changing hybrid power assembly.
Background technology
Hybrid power system is a kind of form that new-energy automobile adopts, and refers generally to electric energy and fuel oil as the system of the energy, namely drives vehicle as power take-off unit jointly by motor and driving engine, thereby obtains better fuel economy and dynamic property.
Stepless change refers to obtain continuously the speed change system of any transmitting ratio in the speed range.Because the continuous adjusting of converter speed ratio can make engine operation in the optimum condition of expectation.Common stepless speed variator system has metal band type stepless speed variator CVT, but is subjected to the restriction of metal tape, can't transmit big moment of torsion.
The utility model content
Technical problem to be solved in the utility model is to propose a kind of planetary gear stepless speed changing hybrid power assembly, has not only realized the coupling of motor and engine power, can also realize stepless change at driving engine by motor and planetary wheel.
In order to solve above technical matters, the utility model provides a kind of planetary gear stepless speed changing hybrid power assembly, comprise output shaft, driving engine, planetary wheel, sun wheel, satellite gear, gear ring, pinion carrier and motor, output shaft and pinion carrier are fixed, driving engine and sun wheel are fixed, and motor and gear ring are fixed, and power is imported by sun wheel and gear ring respectively by driving engine and motor, by output shaft output, final driven wheel.
By to described planetary rotating speed analysis, can draw output shaft, driving engine and rotating speed of motor relation (rotating speed sees from left to right that with Fig. 1 anticlockwise direction is for just):
（1）
In the formula,
---output shaft 1 rotating speed
---motor 4 rotating speeds
---sun wheel 301 numbers of teeth
---gear ring 303 numbers of teeth
Usually driving engine all has a corresponding characteristic curve with it under a certain throttle opening.Can be obtained under corresponding throttle opening the corresponding rotating speed of difference when this engine fuel consumes least and power are maximum by this characteristic curve
With
After recording the current rotating speed of output shaft, according to formula (1) rotating speed of motor is adjusted, the rotating speed of driving engine is reached
Or
Thereby, satisfy the requirement of required fuel economy or dynamic property.That is to say that when the speed of a motor vehicle is arbitrary value this system all can work driving engine by adjustment realizes stepless change to rotating speed of motor under the operating mode that satisfies the requirement of fuel economy or dynamic property.
Described motor must be identical to the force direction of satellite gear with driving engine to the force direction of satellite gear, opposite to the antagonistic force direction of satellite gear with output shaft, be that the Motor torque direction is determined according to the engine torque direction is unique, otherwise planetary wheel can't balance also constantly accelerate rotation, make consumption of power in planetary acceleration, rather than act on the car load.
Described motor may be worked under two operating modes---and generating operation mode produces electric energy and drives the operating mode consumed power.Load torque under the electric power generation operating mode is identical with driving torque direction under driving operating mode, and rotating speed may the direction difference under different operating modes.When motor is in the driving operating mode, the horsepower output of output shaft equals driving engine and power of motor sum, namely
When motor is in generating operation mode, the horsepower output of output shaft equals engine power and deducts power of motor, namely
Identical to the force direction of satellite gear with driving engine to the force direction of satellite gear at described motor, with output shaft under the opposite prerequisite of the antagonistic force direction of satellite gear, when automobile is at the uniform velocity operating mode, suffered making a concerted effort must balance on the satellite gear, namely
, and
So,
If so engine operation (moment of torsion, invariablenes turning speed) under a certain operating mode, under different output speeds, output shaft 1 is exported constant-torque all the time, and namely this stepless speed variator system has the characteristic of the permanent moment of torsion of output, and is different with the output constant power characteristic of traditional toric transmission.
The beneficial effects of the utility model are:
(1) realize stepless change by sun and planet gear, the metallic strip structures that adopts with respect to metal band type stepless speed variator CVT is simpler, and efficient is higher, simultaneously owing to the restriction that is not subjected to metal tape, but transmitting large torque
(2) thus relatively by the infinite variable speed mode that realizes that moves axially of the movable belt wheel of fluid control, realize that by electric machine speed regulation infinite variable speed speed of response is faster;
(3) by adjusting motor speed in real time, can realize stepless change, driving engine is worked under the operating mode that satisfies the requirement of fuel economy or dynamic property.
Description of drawings
Fig. 1 dynamic assembly structural representation
Fig. 2 satellite gear force diagram
The number in the figure explanation:
1-output shaft; 2-driving engine;
3-planetary wheel; 4-motor;
301-sun wheel; 302-satellite gear;
303-gear ring; 304-pinion carrier;
-output shaft is to the antagonistic force of satellite gear.
The specific embodiment
Shown in accompanying drawing, specific embodiment of the utility model is further described.
As shown in Figure 1, the utility model provides a kind of planetary gear stepless speed changing hybrid power assembly, comprise output shaft 1, driving engine 2, planetary wheel 3, sun wheel 301, satellite gear 302, gear ring 303, pinion carrier 304 and motor 4, output shaft 1 and pinion carrier 304 are fixed, driving engine 2 is fixed with sun wheel 301, and motor 4 is fixed with gear ring 303.Power is imported by sun wheel 301 and gear ring 303 respectively by driving engine 2 and motor 4, by output shaft 1 output, final driven wheel.
By the rotating speed analysis to described planetary wheel 3, can draw the rotation speed relation (rotating speed sees from left to right that with accompanying drawing 1 anticlockwise direction is for just) of output shaft 1, driving engine 2 and motor 4:
In the formula,
---output shaft 1 rotating speed
Usually driving engine 2 all has a corresponding characteristic curve with it under a certain throttle opening.Can be obtained under corresponding throttle opening the corresponding rotating speed of difference when this engine fuel consumes least and power are maximum by this characteristic curve
With
After recording output shaft 1 current rotating speed, according to formula (1) rotating speed of motor 4 is adjusted, the rotating speed of driving engine 2 is reached
Or
Thereby, satisfy the requirement of required fuel economy or dynamic property.That is to say that when the speed of a motor vehicle is arbitrary value this system all can realize stepless change by the rotating speed adjustment to motor 4, driving engine is worked under the operating mode that satisfies the requirement of fuel economy or dynamic property.
As shown in Figure 2, the force direction of 4 pairs of satellite gears 302 of described motor must be identical with the force direction of 2 pairs of satellite gears 302 of driving engine, opposite with the antagonistic force direction of 1 pair of satellite gear 302 of output shaft, be that the Motor torque direction is determined according to the engine torque direction is unique, otherwise planetary wheel 3 can't balance also constantly accelerate rotation, make consumption of power in the acceleration of planetary wheel 3, rather than act on the car load.
Described motor 4 may be worked under two operating modes---and generating operation mode produces electric energy and drives the operating mode consumed power.Load torque under motor 4 generating operation modes is identical with driving torque direction under driving operating mode, and rotating speed may the direction difference under different operating modes.When motor 4 is in the driving operating mode, the horsepower output of output shaft 1 equals driving engine 2 and motor 4 power sums, namely
When motor 2 is in generating operation mode, the horsepower output of output shaft 1 equals driving engine 4 power and deducts motor 2 power, namely
Suppose that driving engine 2 works under a certain throttle opening, require its rotating speed to control according to required fuel economy or dynamic property
, can calculate the required rotating speed of motor 4 according to formula (1)
Gained
May also may namely anticlockwise direction may be less than 0 greater than 0, also clockwise direction may be.And by preceding described, therefore motor 4 torque directions are necessary for a certain definite direction (conter clockwise or cw), if required motor 4 rotating speeds are identical with the Motor torque direction, motor 4 is in the driving operating mode so, the horsepower output of output shaft 1 equals driving engine 2 and motor 4 power sums, namely
If required motor 4 rotating speeds are opposite with torque direction, then motor 4 is in generating operation mode, and the horsepower output of output shaft 1 equals driving engine 2 power and deducts motor 4 power, namely
Force direction at 2 pairs of satellite gears 302 of force direction and driving engine of 4 pairs of satellite gears 302 of described motor is identical, under the prerequisite opposite with the antagonistic force direction of 1 pair of satellite gear 302 of output shaft, when automobile is at the uniform velocity operating mode, suffered making a concerted effort must balance on the satellite gear 302, namely
, and
So,
If therefore driving engine 2 is operated in (moment of torsion, invariablenes turning speed) under a certain operating mode, under different output speeds, output shaft 1 is exported constant-torque all the time, and namely this stepless speed variator system has the characteristic of the permanent moment of torsion of output, and is different with the output constant power characteristic of traditional toric transmission.
Suppose that driving engine 2 is exported torque under a certain throttle opening, rotating speed is respectively when automobile is at the uniform velocity operating mode
,
, correspondence acts on and on the satellite gear 302 as application force is
By preceding described, can make by regulating motor 4 rotating speeds
,
Keep constant, make thus
Also keep constant; Motor 4 output torques this moment, rotating speed are respectively
,
, the application force that correspondence acts on satellite gear 302 is
In order to make satellite gear 302 balances, as shown in Figure 2, must satisfy
, and
, therefore
And
Keep constant, therefore
Also keep constant, namely output shaft 1 is exported constant-torque all the time.
Claims (2)
1. planetary gear stepless speed changing hybrid power assembly, comprise driving engine, motor, planetary wheel, sun wheel, satellite gear, gear ring, pinion carrier and output shaft, it is characterized in that: driving engine and sun wheel are fixed, and motor and gear ring are fixed, and output shaft and pinion carrier are fixed; Power is imported by sun wheel and gear ring respectively by driving engine and motor, and by the output shaft output fixed with pinion carrier, final driven wheel by adjusting rotating speed of motor, is realized stepless change.
2. planetary gear stepless speed changing hybrid power assembly according to claim 1, it is characterized in that: described engine operation is under arbitrary operating mode, and under different output speeds, output shaft is exported constant-torque all the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320047827 CN203063652U (en) | 2013-01-29 | 2013-01-29 | Stepless speed change hybrid power assembly with planetary gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320047827 CN203063652U (en) | 2013-01-29 | 2013-01-29 | Stepless speed change hybrid power assembly with planetary gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203063652U true CN203063652U (en) | 2013-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320047827 Expired - Fee Related CN203063652U (en) | 2013-01-29 | 2013-01-29 | Stepless speed change hybrid power assembly with planetary gear |
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| Country | Link |
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| CN (1) | CN203063652U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104786817A (en) * | 2015-04-27 | 2015-07-22 | 奇瑞汽车股份有限公司 | Power coupling device used for hybrid electric vehicle and hybrid electric vehicle |
-
2013
- 2013-01-29 CN CN 201320047827 patent/CN203063652U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104786817A (en) * | 2015-04-27 | 2015-07-22 | 奇瑞汽车股份有限公司 | Power coupling device used for hybrid electric vehicle and hybrid electric vehicle |
| CN104786817B (en) * | 2015-04-27 | 2017-05-10 | 奇瑞汽车股份有限公司 | Power coupling device used for hybrid electric vehicle and hybrid electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20210129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |